WMSIC Electronic Components

LOWPOWER LP4057B6F

ModelLP4057B6F
PackageSOT-23-6
BrandLOWPOWER
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LOWPOWER LP4057B6F
Type
LOWPOWER
Minimum package
3000 个

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LOWPOWER
Electronic Component
LP4057B6F
Electronic Component
1
Package
SOT-23-6
Electronic Component
Battery Management
Electronic Component
0.047g
Electronic Component
1
Features
Programmable Current
Electronic Component
BM0229474317
Operating Temperature
40℃~+85℃
Operating Voltage
4.5V~6.5V
Battery Type
Battery
Battery
1
ICType
IC
Static Current(Iq)
50uA

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

LP4057B6F 产品概述

一、概述

LP4057B6F 是微源半导体(LOWPOWER)推出的一款单节锂电池线性充电管理芯片,封装为 SOT-23-6。芯片支持宽输入电压 4.5V~6.5V,采用常见的恒流/恒压(CC/CV)充电策略,充电饱和电压为 4.20V,最大充电电流 600mA,静态工作电流仅 50μA,工作温度范围 -40℃~+85℃,适合便携式与低功耗场景的单节锂离子电池充电管理。

二、主要特性

  • 支持单节锂电池充电,充电终止电压 4.20V(典型值);
  • 宽输入电压范围:4.5V~6.5V,兼容 USB 和小型适配器输入;
  • 最大充电电流 600mA,满足中小电流快速充电需求;
  • 低静态电流 Iq = 50μA,提升系统待机能效;
  • 封装:SOT-23-6,适合空间受限应用;
  • 工作温度范围 -40℃ 至 +85℃,适应工业级与消费级环境。
    (注:具体保护功能与参数以官方数据手册为准。)

三、典型应用场景

  • 蓝牙耳机、TWS、可穿戴设备;
  • 便携电子产品(遥控器、小型手持设备);
  • 小型电源宝、充电模块、电池管理系统生命周期测试平台;
  • 需要低静态功耗与单节锂电充电的各类嵌入式设备。

四、使用建议与设计要点

  • 充电电流配置:通过外部元件配置充电电流,最大不超过 600mA,推荐根据 PCB 散热能力与电池规格选择合适电流;
  • 熔断与保护:设计时应配合外部保险/熔断器及合适的输入滤波与反向保护措施以提升系统可靠性;
  • 热管理:线性充电器在大电流时会产生热量,务必关注 MOSFET 与封装温升,合理布线与散热,避免长期高温工作;
  • PCB 布局:输入(VIN)、地(GND)与电池(BAT)走线应尽量粗短,靠近芯片放置旁路电容与充电电阻,减少寄生阻抗与热噪声;
  • 兼容性验证:不同电池制造商与化学体系对充电曲线敏感,实际设计前应进行充放电与安全性测试,验证充电终止与预充电行为。

五、包装与选型

LP4057B6F 采用常见的 SOT-23-6 封装,适合自动贴片生产。选型时除关注核心参数(输入电压、最大电流、终止电压、静态电流、工作温度)外,还应参考完整数据手册中的保护特性、引脚说明与典型应用电路,以确保与系统匹配。

总结:LP4057B6F 以低静态电流、宽输入电压与单节锂电的可靠充电管理为特点,适合对体积、功耗和成本敏感的便携式应用。具体功能与限制请以微源半导体发布的官方数据手册为准,并在工程验证中根据系统需求调整外设与散热方案。

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